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(No Modem v 2 sheetssheet 1.

G. E. CHANDLER.

PUMP.

GEORGE E. CHANDLER, OF PROVIDENCE, RHODE ISLAND, ASSIGN OR OF FIVE- EIGH'IHS TO ALFRED D. CHANDLER, OF SAME PLACE, AND CHARLES M. LUNT, OF NEWBURY, MASSACHUSETTS.

SPECIFICATION forming part of Letters Patent No. 307,842, dated November 11, 1884.

i Application filed September 5, 1853. (No model.)

To all whom #may concern Be it known that I, GEORGE E. CHANDLER, of the city and county of Providence, in the State of Rhode Island, have invented a new and useful Improvement in Pumps; and I declare the following to be a specification thereof, reference being had to the accompanying drawings.

Like letters indicate like parts.

Figure l shows in side elevation my improved pump in position in a well with curb. Fig. 2 is a vertical section of my invention on line a@ x of Fig. 3. Fig. 3 is a plan of the inner surface of the lower shell, showing the I 5 blades or paddles in position therein.

is a plan of the inner surface of the upper shell. Fig. 5 is a plan of the inner surface of the lower shell without the propelling mechanism.. Fig. 6 is a side elevation of my in- 2o vention. Figs. 7 and 8 show in elevation the blades and the' manner of the mounting in the boss of the main shaft, Fig. 7 being partly in vertical section on liney'of Fig. 8, and Fig. 8 partly in vertical section on line z of Fig. 7.

My invention relates to the class of submerged pumps; and it consists of a shell or casting, made in two sections, provided with inlet and outlet pipes, and having an interior space of 'variously-inclined surfaces, within 3o which space one or more sets of paddles or blades are revolved by suitable external meehanism, for the purpose of expelling the water contents of the shell, such blades having a limited reciprocating oscillation as they revolve, which is produced'by the combined force vof the rotating shaft wherein they are mounted, and of the cam-like action of the severaliinelined surfaces aforesaid, with which they engage, as hereinafter fully specified.

In constructing my improved pump I make a shell, preferably of cast metal, in two sections, A and B, in the form shown in Figs. 2 to 6, inclusive. Said sections have a continuous flange, e, on their outer rim, where theyI are bolted at intervals, as shown at b. An inlet-pipe, C, and an outlet or discharge pipe,`

D,open into the central hollow space, which is'the interior of the shell. These inner surfaces are formed into a water-way or sluice.

Fig. 11

The water enters through the inlet C into a concave passage, c, which, by an incline, d, on the lower section, B, Fig. 5, broadens into a triangular sluiceway, c. (Seen best in Fig. 2.) The sluiceway e continues of about uni- `form depth until it describes somewhat less than a half-circle, when it rapidly converges by the incline f of the upper shell, Fig. 4, to a shallower concave course, g, leading into the discharge-pipe D.

Arrows marked indicate direction of watercurrents.

E indicates a strainer of wire-gauze to cover 'the inlet-pipe C.

Thin guide-plates F F, p referably in the form of an arc, bridge the sluiceway and serve to direct and sustain the paddles in their movements.A

' The upper shell has a central aperture or bore to admit the main shaft, G, and the lower shell has a central seat, h, countersunk in it, to serve as a bearing for the end of said main shaft. At the central parts of the inner surfaces of said sections A and B the metal is eut away in plane steps or bearings z' j k, as shown in Figs. 2, 3, 4, and 5. The plane flat surface k in the lower shell allows the easy passage of the blades, as shown in Figs. 2 and 8, and at without the use of an abutment, as in other rotary pumps.

Having thus described the stationary parts of my device, I will new proceed to specify the moving orA operative parts. V

Power may be applied by pulley or crank. In Fig. I I have shown the pump supported within and upon a well by suitable crossbeams, platforms, and curb, and operated by a crank, H, which, by the beveled gearing I, rotates the main shaft G, The shaft G turns in the direction shown by arrows marked At the lower end of the shaft G is a hub or boss, J, having a central bore, whiehisfilled at each side by the bushings K.

Paddle-blades L areA rigidly fastened upon arbors M M, and are inclined to each other ninety degrees. The arbor M has its bearings in the hub itself, as shown in Fig. 8, and the arbor M has its bearings in the bushings K,

the same time prevents the escape of the water as shown in Fig. 7. Said arbor M is bent at its center into a bow shape, to allow a slight vertical vibration. The necessity of such eentral bending is to confine the blades consecutively to the same horizontal plane of rotation as the blades of the straight arbor M. The

arbors M M are placed atright angles to each other horizontally.

Illustrating, by reference to Fig. 3, the movement of the blades in their revolution, and giving in said figure a separate designation to each blade for the sake of elearness of description, it will be seen that the blades L L2 are companions on one arbor, and the blades L3 L* are companions -on the other arbor. Vhile the blade L moves horizontally upon the bearing K and guide F, the blade L2 is in a vertical position, and while the blade L3 is turned forward to an angle of forty-five degrees by its striking against the incline f of section A, Fig. 4, the blade L4 is turned fortyfive degrees in the opposite direction by reason of its rigid connection'to the same arbor. In

the rotation of the shaft Geach blade consecuy itself becomes horizontal again.

tively takes the position shown at L L4 L2 L3,

as soon as the companion blade L2 has traversed the incline f of section A, Fig. 4, and it maintains its perpendicularity until it is turned by its contact with the incline f, and

By thus following the blade L through an entire revolution of the shaft it-is evident that said, blade first intercepts the current of water at the point marked m on Fig. 3, and then turning toward and into a vertical position propels the water in front of it through the sluiceway e, and at the point marked n on Fig. 3 forces the water into the passage g to the discharge-pipe D. As the blade com es to its horizontal p'osition upon the guide F o f section A, Fig. 4, and within the step-bearing k of section B, Fig. 3, it fills the space k, Fig. 2, and the water can dow in no other course than through the outlet; In this way, by the continuous rotation ofthe blades and their tilting movement upon their respective arbors, each volume of water within the sluiceway intercepted between the blades is moved bodily forward and lifted into and up the discharge-pipe to any desired height. The height of this water-lift l is limited only by the strength of the blades to sustain theweight of the water-column in the pipe D; hence this pumpis admirably adapted for use in mines or deep wells.

In its work the pump alwayshas the full capacity of two blades, for of each companion set one blade is in a perpendicular direction, except while passing the inclines d f, and at such times each of the two blades of the set is working at half capacity, thus equaling the full capacity of one blade.

The oscillation of the arbor M', caused by the tilting of its blades upon the inclines d'f, is indicated in dotted lines in Figs. 2 and 8, in which such vibration is seen to amount to a quarter-revolution.

By forming the water-course or sluiceway with the several inclined interior surfaces described I secure a gradual turning of the blades in their revolution thereon, instead of having them tilted or tripped suddenly in their course by striking against a stop or spring, as in some varieties of rotary pumps. Such springs, being submerged, soon rust and become inefficient and often break. The blades in my improved pump change their angle of inclination gradually by the shape ofthe shells alone, and

without receiving any shock or concussion. These inclines are cast solid with'and are a vpart of the shells, and hence the blades are tilted nand tripped with absolute uniformity and without waste of power.

I claim as a novel` and useful invention and desire to secure by LettersPatent- 1. In a rotary pump, the combination ofthe shcllsA B,y the shaft G, having a hub, J, provided with bushing K, the arbor M, having fixedblades L Land mounted in said hub, and the arbor M', having fixed blades L L and bent bow-shaped at its center, said arbor being mounted in the bushing of the hub, substantially as described.

`2. In a rotary pump, the shells A B, united as shown, having an interior sluiceway whose surfaces c d `cfg are inclined to each other, as described, in combination with the rotary shaft G, having hub .I and bushing K, and the oscillatingarbors MM', having blades L L L L, said arbors being mounted, respectively, in said hub and scribed.

' 'GEORGE E. CHANDLER.

Witnesses:

DANIEL W. FINK, XVARREN R. Planen.

bushing, substantially 1as de- IOO 

